Bailer bottom



A. BOYNTON BAILER BOTTOM Filed on 29.

IN V EN TOR fllazalaaerfiqyidiolo BY L/ 95 A TTOR N E Y5 WITNESSES Patented Get. 28, 1924.

ALEXANDER BOYNTON, OF SAN ANTONIO, TEXAS.

BAILER BOTTOM.

Appflication filed October 29, 1923.

7 '0 all whom it may concern:

Be it known that I, ALEXANDER BoYNToN, a citizen of the United States, residing at San Antonio, in the county of Bexar, State of Texas, have invented ce tain new and useful Improvements in Bailer Bottoms, of which the following is a specification.

This invention relates to bailer bottoms,

and is an improvement on the construction illustrated in my United States Patent No. 1,464,239, issued August 7 1923.

An important object of this invention is to provide a bailer bottom having simple means whereby the mud or the like may be discharged when churned on the derrick sill of a well.

Also an important aim is to provide a bailer bottom having novel means whereby the discharge openings may be prevented from accidentally moving into registration as a result of vibration when in the well.

A further object is to provide a bailer which is of highly simplified construction, durable in use, and comparatively cheap to manufacture.

Other objects and advantages will be apparent during the course of the following description.

In the accompanying drawings forming part of this application, and in which like numerals designate like parts throughout the same,

Figure 1 is a side elevation of the improved bailer,

Figure 2 is a vertical sectional View through the same, the view being taken at right angles to Figure 1,

Figure 3 is a horizontal sectional view taken on the line 33 of Figure 1, and

Figure 4: is a horizontal sectional view taken on the line H of Figure 1.

Figure 5 is a group perspective of a flap valve.

In the drawing, wherein for the purpose of illustration, is shown a preferred embodi ment of the invention, the numeral 5 designates a body or inner sleeve connected by means of a coupling 6 to the member 7.

The body or inner sleeve 5 supports an outer sleeve 8, the said inner and outer sleeves being provided with ports 9 and 10, respectively. As illustrated in Figure 1 the discharge ports 9 and 10 are arranged on opposite sides of the tool so that in case mud brought up by the bailer is unusually heavy and will not discharge readily a steam hose Serial No. 671,586.

or the like may be inserted in one pair of registering openings and the mud will be discharged through the opposite pair of ports, all of which is described in my patent of the above number. It might also be stated that the discharge ports are substantially greater in area than the cross sectional area of the bailer so that the material may discharge rapidly when churned upon the derrick sill. Of course, if the mud or the like is very soft, merely by bringing the ports 9 and 10 into registration the mud will discharge itself.

The rotation of the outer sleeve 8 is limited by a pin 12 carried by the body 5 and operating in a spiral slot 14 in the outer sleeve hen the pin 12 is in the lower portion of the slot 14 the ports 9 and 10 are in registration and when the pin is in the upper portion of the slot 14 the ports will be out of registration. In other words, the outer sleeve 8 will descend slightly as illustrated in Figure 2 when the pin 12 is positioned in the upper portion of the slot 14 and the weight of the sleeve will prevent the sleeve from rotating on the body and accidentally bringing the inner and outer discharge ports 9 and 10, respectively, into registration.

When the sleeve 8 is in the non-discharging position, it rests upon an annular shoulder 16 formed on the body 5 by exteriorly enlarging the forward portion of the body.

Furthermore, when the sleeve 8 is in its non-discharging position the pin 12 is relieved of all strain because the outer sleeve rests upon the annular shoulder 16.

Upon withdrawing the bailer bottom from the well, the sleeve 8 may be manually rotated if possible or by engaging the lugs of a special tool in the notches 20 in the rear portion of the outer sleeve. When the ports 9 and 10 have been brought into registration the material is discharged by gravity or by churning.

The lower portion of the body 5 is provided with a one-way valve 22, pivotally connected by a pivot pin 23 to a valve seat 24. The valve seat 24 is held in the lower portion of the body 5 by suitable means and may be removed by engaging a suitable tool in lugs 25 in the underside of the seat.

When the bailer is lowered into the well the mud is taken in through the flap valve assembly by repeated churning of the bailer upon the bottom thus forcing the mud higher into the bailer at each thrust upon the bottom. When the bailer is filled it is withdrawn from the Well and let down into the slush tank and the discharge ports brought into registration. As previously stated, the mud w1ll either discharge by gravity or by churning upon the derrick sill and the fact that the lower portion of the bailer bottom is closed by the flap valve assembly will not in any way retard the discharging operation.

Having thus described the invention, what I claim is:

1. A bailer bottom comprising a supportin sleeve, and a supported sleeve, said sleeves being fitted one within the other and having discharge ports adapted to be moved into registration to open the bailer bottom and to be moved out of registration to close the bailer bottom, cooperating means on said sleeves for limiting the angular movement of the sleeves relative to each other, while permitting limited axial movement of the sleeves with respect to each other, said means serving to sustain the supported sleeve 0d the supporting sleeve when the openings are in registration, and a support independent of said means for sustaining the supported sleeve when the openings are out of registration.

2. A bailer bottom comprising inner and outer sleeves having discharge ports adapted for registration, a pin and spiral slot connection between the inner and outer sleeve and limiting the rotation of the outer sleeve on the inner sleeve, said inner sleeve being provided with an annular shoulder adapte to support the outer sleeve when the ports are out of registration, whereby the pin and slot connection is relieved of strain.

3. A bailer bottom comprising inner and outer sleeves having ports adapted for registration, one of the sleeves being provided with a pin and the other being provided with a spiral slot receiving said pin and limiting 

